--- /dev/null
+From bda9a71980e083699a0360963c0135657b73f47a Mon Sep 17 00:00:00 2001
+From: Miklos Szeredi <mszeredi@redhat.com>
+Date: Fri, 22 Oct 2021 17:03:01 +0200
+Subject: fuse: annotate lock in fuse_reverse_inval_entry()
+
+From: Miklos Szeredi <mszeredi@redhat.com>
+
+commit bda9a71980e083699a0360963c0135657b73f47a upstream.
+
+Add missing inode lock annotatation; found by syzbot.
+
+Reported-and-tested-by: syzbot+9f747458f5990eaa8d43@syzkaller.appspotmail.com
+Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/fuse/dir.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/fs/fuse/dir.c
++++ b/fs/fuse/dir.c
+@@ -1132,7 +1132,7 @@ int fuse_reverse_inval_entry(struct fuse
+ if (!parent)
+ return -ENOENT;
+
+- inode_lock(parent);
++ inode_lock_nested(parent, I_MUTEX_PARENT);
+ if (!S_ISDIR(parent->i_mode))
+ goto unlock;
+
--- /dev/null
+From 1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c Mon Sep 17 00:00:00 2001
+From: Miklos Szeredi <mszeredi@redhat.com>
+Date: Thu, 4 Nov 2021 10:55:34 +0100
+Subject: ovl: fix warning in ovl_create_real()
+
+From: Miklos Szeredi <mszeredi@redhat.com>
+
+commit 1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c upstream.
+
+Syzbot triggered the following warning in ovl_workdir_create() ->
+ovl_create_real():
+
+ if (!err && WARN_ON(!newdentry->d_inode)) {
+
+The reason is that the cgroup2 filesystem returns from mkdir without
+instantiating the new dentry.
+
+Weird filesystems such as this will be rejected by overlayfs at a later
+stage during setup, but to prevent such a warning, call ovl_mkdir_real()
+directly from ovl_workdir_create() and reject this case early.
+
+Reported-and-tested-by: syzbot+75eab84fd0af9e8bf66b@syzkaller.appspotmail.com
+Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/overlayfs/dir.c | 3 +--
+ fs/overlayfs/overlayfs.h | 1 +
+ fs/overlayfs/super.c | 12 ++++++++----
+ 3 files changed, 10 insertions(+), 6 deletions(-)
+
+--- a/fs/overlayfs/dir.c
++++ b/fs/overlayfs/dir.c
+@@ -137,8 +137,7 @@ kill_whiteout:
+ goto out;
+ }
+
+-static int ovl_mkdir_real(struct inode *dir, struct dentry **newdentry,
+- umode_t mode)
++int ovl_mkdir_real(struct inode *dir, struct dentry **newdentry, umode_t mode)
+ {
+ int err;
+ struct dentry *d, *dentry = *newdentry;
+--- a/fs/overlayfs/overlayfs.h
++++ b/fs/overlayfs/overlayfs.h
+@@ -519,6 +519,7 @@ struct ovl_cattr {
+
+ #define OVL_CATTR(m) (&(struct ovl_cattr) { .mode = (m) })
+
++int ovl_mkdir_real(struct inode *dir, struct dentry **newdentry, umode_t mode);
+ struct dentry *ovl_create_real(struct inode *dir, struct dentry *newdentry,
+ struct ovl_cattr *attr);
+ int ovl_cleanup(struct inode *dir, struct dentry *dentry);
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -743,10 +743,14 @@ retry:
+ goto retry;
+ }
+
+- work = ovl_create_real(dir, work, OVL_CATTR(attr.ia_mode));
+- err = PTR_ERR(work);
+- if (IS_ERR(work))
+- goto out_err;
++ err = ovl_mkdir_real(dir, &work, attr.ia_mode);
++ if (err)
++ goto out_dput;
++
++ /* Weird filesystem returning with hashed negative (kernfs)? */
++ err = -EINVAL;
++ if (d_really_is_negative(work))
++ goto out_dput;
+
+ /*
+ * Try to remove POSIX ACL xattrs from workdir. We are good if:
--- /dev/null
+From 2431774f04d1050292054c763070021bade7b151 Mon Sep 17 00:00:00 2001
+From: "Paul E. McKenney" <paulmck@kernel.org>
+Date: Tue, 20 Jul 2021 06:16:27 -0700
+Subject: rcu: Mark accesses to rcu_state.n_force_qs
+
+From: Paul E. McKenney <paulmck@kernel.org>
+
+commit 2431774f04d1050292054c763070021bade7b151 upstream.
+
+This commit marks accesses to the rcu_state.n_force_qs. These data
+races are hard to make happen, but syzkaller was equal to the task.
+
+Reported-by: syzbot+e08a83a1940ec3846cd5@syzkaller.appspotmail.com
+Acked-by: Marco Elver <elver@google.com>
+Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ kernel/rcu/tree.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+--- a/kernel/rcu/tree.c
++++ b/kernel/rcu/tree.c
+@@ -1888,7 +1888,7 @@ static void rcu_gp_fqs(bool first_time)
+ struct rcu_node *rnp = rcu_get_root();
+
+ WRITE_ONCE(rcu_state.gp_activity, jiffies);
+- rcu_state.n_force_qs++;
++ WRITE_ONCE(rcu_state.n_force_qs, rcu_state.n_force_qs + 1);
+ if (first_time) {
+ /* Collect dyntick-idle snapshots. */
+ force_qs_rnp(dyntick_save_progress_counter);
+@@ -2530,7 +2530,7 @@ static void rcu_do_batch(struct rcu_data
+ /* Reset ->qlen_last_fqs_check trigger if enough CBs have drained. */
+ if (count == 0 && rdp->qlen_last_fqs_check != 0) {
+ rdp->qlen_last_fqs_check = 0;
+- rdp->n_force_qs_snap = rcu_state.n_force_qs;
++ rdp->n_force_qs_snap = READ_ONCE(rcu_state.n_force_qs);
+ } else if (count < rdp->qlen_last_fqs_check - qhimark)
+ rdp->qlen_last_fqs_check = count;
+
+@@ -2876,10 +2876,10 @@ static void __call_rcu_core(struct rcu_d
+ } else {
+ /* Give the grace period a kick. */
+ rdp->blimit = DEFAULT_MAX_RCU_BLIMIT;
+- if (rcu_state.n_force_qs == rdp->n_force_qs_snap &&
++ if (READ_ONCE(rcu_state.n_force_qs) == rdp->n_force_qs_snap &&
+ rcu_segcblist_first_pend_cb(&rdp->cblist) != head)
+ rcu_force_quiescent_state();
+- rdp->n_force_qs_snap = rcu_state.n_force_qs;
++ rdp->n_force_qs_snap = READ_ONCE(rcu_state.n_force_qs);
+ rdp->qlen_last_fqs_check = rcu_segcblist_n_cbs(&rdp->cblist);
+ }
+ }
+@@ -3986,7 +3986,7 @@ int rcutree_prepare_cpu(unsigned int cpu
+ /* Set up local state, ensuring consistent view of global state. */
+ raw_spin_lock_irqsave_rcu_node(rnp, flags);
+ rdp->qlen_last_fqs_check = 0;
+- rdp->n_force_qs_snap = rcu_state.n_force_qs;
++ rdp->n_force_qs_snap = READ_ONCE(rcu_state.n_force_qs);
+ rdp->blimit = blimit;
+ if (rcu_segcblist_empty(&rdp->cblist) && /* No early-boot CBs? */
+ !rcu_segcblist_is_offloaded(&rdp->cblist))
--- /dev/null
+From 3344b58b53a76199dae48faa396e9fc37bf86992 Mon Sep 17 00:00:00 2001
+From: George Kennedy <george.kennedy@oracle.com>
+Date: Thu, 4 Nov 2021 15:06:37 -0500
+Subject: scsi: scsi_debug: Don't call kcalloc() if size arg is zero
+
+From: George Kennedy <george.kennedy@oracle.com>
+
+commit 3344b58b53a76199dae48faa396e9fc37bf86992 upstream.
+
+If the size arg to kcalloc() is zero, it returns ZERO_SIZE_PTR. Because of
+that, for a following NULL pointer check to work on the returned pointer,
+kcalloc() must not be called with the size arg equal to zero. Return early
+without error before the kcalloc() call if size arg is zero.
+
+BUG: KASAN: null-ptr-deref in memcpy include/linux/fortify-string.h:191 [inline]
+BUG: KASAN: null-ptr-deref in sg_copy_buffer+0x138/0x240 lib/scatterlist.c:974
+Write of size 4 at addr 0000000000000010 by task syz-executor.1/22789
+
+CPU: 1 PID: 22789 Comm: syz-executor.1 Not tainted 5.15.0-syzk #1
+Hardware name: Red Hat KVM, BIOS 1.13.0-2
+Call Trace:
+ __dump_stack lib/dump_stack.c:88 [inline]
+ dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106
+ __kasan_report mm/kasan/report.c:446 [inline]
+ kasan_report.cold.14+0x112/0x117 mm/kasan/report.c:459
+ check_region_inline mm/kasan/generic.c:183 [inline]
+ kasan_check_range+0x1a3/0x210 mm/kasan/generic.c:189
+ memcpy+0x3b/0x60 mm/kasan/shadow.c:66
+ memcpy include/linux/fortify-string.h:191 [inline]
+ sg_copy_buffer+0x138/0x240 lib/scatterlist.c:974
+ do_dout_fetch drivers/scsi/scsi_debug.c:2954 [inline]
+ do_dout_fetch drivers/scsi/scsi_debug.c:2946 [inline]
+ resp_verify+0x49e/0x930 drivers/scsi/scsi_debug.c:4276
+ schedule_resp+0x4d8/0x1a70 drivers/scsi/scsi_debug.c:5478
+ scsi_debug_queuecommand+0x8c9/0x1ec0 drivers/scsi/scsi_debug.c:7533
+ scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1520 [inline]
+ scsi_queue_rq+0x16b0/0x2d40 drivers/scsi/scsi_lib.c:1699
+ blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1639
+ __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325
+ blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358
+ __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1761
+ __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1838
+ blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891
+ blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474
+ blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:62
+ blk_execute_rq+0xdb/0x360 block/blk-exec.c:102
+ sg_scsi_ioctl drivers/scsi/scsi_ioctl.c:621 [inline]
+ scsi_ioctl+0x8bb/0x15c0 drivers/scsi/scsi_ioctl.c:930
+ sg_ioctl_common+0x172d/0x2710 drivers/scsi/sg.c:1112
+ sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1165
+ vfs_ioctl fs/ioctl.c:51 [inline]
+ __do_sys_ioctl fs/ioctl.c:874 [inline]
+ __se_sys_ioctl fs/ioctl.c:860 [inline]
+ __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860
+ do_syscall_x64 arch/x86/entry/common.c:50 [inline]
+ do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80
+ entry_SYSCALL_64_after_hwframe+0x44/0xae
+
+Link: https://lore.kernel.org/r/1636056397-13151-1-git-send-email-george.kennedy@oracle.com
+Reported-by: syzkaller <syzkaller@googlegroups.com>
+Acked-by: Douglas Gilbert <dgilbert@interlog.com>
+Signed-off-by: George Kennedy <george.kennedy@oracle.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/scsi/scsi_debug.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/scsi/scsi_debug.c
++++ b/drivers/scsi/scsi_debug.c
+@@ -4238,6 +4238,8 @@ static int resp_verify(struct scsi_cmnd
+ mk_sense_invalid_opcode(scp);
+ return check_condition_result;
+ }
++ if (vnum == 0)
++ return 0; /* not an error */
+ a_num = is_bytchk3 ? 1 : vnum;
+ /* Treat following check like one for read (i.e. no write) access */
+ ret = check_device_access_params(scp, lba, a_num, false);
+@@ -4301,6 +4303,8 @@ static int resp_report_zones(struct scsi
+ }
+ zs_lba = get_unaligned_be64(cmd + 2);
+ alloc_len = get_unaligned_be32(cmd + 10);
++ if (alloc_len == 0)
++ return 0; /* not an error */
+ rep_opts = cmd[14] & 0x3f;
+ partial = cmd[14] & 0x80;
+
--- /dev/null
+From 36e07d7ede88a1f1ef8f0f209af5b7612324ac2c Mon Sep 17 00:00:00 2001
+From: George Kennedy <george.kennedy@oracle.com>
+Date: Tue, 9 Nov 2021 13:57:27 -0500
+Subject: scsi: scsi_debug: Fix type in min_t to avoid stack OOB
+
+From: George Kennedy <george.kennedy@oracle.com>
+
+commit 36e07d7ede88a1f1ef8f0f209af5b7612324ac2c upstream.
+
+Change min_t() to use type "u32" instead of type "int" to avoid stack out
+of bounds. With min_t() type "int" the values get sign extended and the
+larger value gets used causing stack out of bounds.
+
+BUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline]
+BUG: KASAN: stack-out-of-bounds in sg_copy_buffer+0x1de/0x240 lib/scatterlist.c:976
+Read of size 127 at addr ffff888072607128 by task syz-executor.7/18707
+
+CPU: 1 PID: 18707 Comm: syz-executor.7 Not tainted 5.15.0-syzk #1
+Hardware name: Red Hat KVM, BIOS 1.13.0-2
+Call Trace:
+ __dump_stack lib/dump_stack.c:88 [inline]
+ dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106
+ print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:256
+ __kasan_report mm/kasan/report.c:442 [inline]
+ kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:459
+ check_region_inline mm/kasan/generic.c:183 [inline]
+ kasan_check_range+0x1a3/0x210 mm/kasan/generic.c:189
+ memcpy+0x23/0x60 mm/kasan/shadow.c:65
+ memcpy include/linux/fortify-string.h:191 [inline]
+ sg_copy_buffer+0x1de/0x240 lib/scatterlist.c:976
+ sg_copy_from_buffer+0x33/0x40 lib/scatterlist.c:1000
+ fill_from_dev_buffer.part.34+0x82/0x130 drivers/scsi/scsi_debug.c:1162
+ fill_from_dev_buffer drivers/scsi/scsi_debug.c:1888 [inline]
+ resp_readcap16+0x365/0x3b0 drivers/scsi/scsi_debug.c:1887
+ schedule_resp+0x4d8/0x1a70 drivers/scsi/scsi_debug.c:5478
+ scsi_debug_queuecommand+0x8c9/0x1ec0 drivers/scsi/scsi_debug.c:7533
+ scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1520 [inline]
+ scsi_queue_rq+0x16b0/0x2d40 drivers/scsi/scsi_lib.c:1699
+ blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1639
+ __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325
+ blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358
+ __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1761
+ __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1838
+ blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891
+ blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474
+ blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:62
+ sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:836
+ sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:774
+ sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:939
+ sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1165
+ vfs_ioctl fs/ioctl.c:51 [inline]
+ __do_sys_ioctl fs/ioctl.c:874 [inline]
+ __se_sys_ioctl fs/ioctl.c:860 [inline]
+ __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860
+ do_syscall_x64 arch/x86/entry/common.c:50 [inline]
+ do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80
+ entry_SYSCALL_64_after_hwframe+0x44/0xae
+
+Link: https://lore.kernel.org/r/1636484247-21254-1-git-send-email-george.kennedy@oracle.com
+Reported-by: syzkaller <syzkaller@googlegroups.com>
+Acked-by: Douglas Gilbert <dgilbert@interlog.com>
+Signed-off-by: George Kennedy <george.kennedy@oracle.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/scsi/scsi_debug.c | 34 +++++++++++++++++++---------------
+ 1 file changed, 19 insertions(+), 15 deletions(-)
+
+--- a/drivers/scsi/scsi_debug.c
++++ b/drivers/scsi/scsi_debug.c
+@@ -1188,7 +1188,7 @@ static int p_fill_from_dev_buffer(struct
+ __func__, off_dst, scsi_bufflen(scp), act_len,
+ scsi_get_resid(scp));
+ n = scsi_bufflen(scp) - (off_dst + act_len);
+- scsi_set_resid(scp, min_t(int, scsi_get_resid(scp), n));
++ scsi_set_resid(scp, min_t(u32, scsi_get_resid(scp), n));
+ return 0;
+ }
+
+@@ -1561,7 +1561,8 @@ static int resp_inquiry(struct scsi_cmnd
+ unsigned char pq_pdt;
+ unsigned char *arr;
+ unsigned char *cmd = scp->cmnd;
+- int alloc_len, n, ret;
++ u32 alloc_len, n;
++ int ret;
+ bool have_wlun, is_disk, is_zbc, is_disk_zbc;
+
+ alloc_len = get_unaligned_be16(cmd + 3);
+@@ -1584,7 +1585,8 @@ static int resp_inquiry(struct scsi_cmnd
+ kfree(arr);
+ return check_condition_result;
+ } else if (0x1 & cmd[1]) { /* EVPD bit set */
+- int lu_id_num, port_group_id, target_dev_id, len;
++ int lu_id_num, port_group_id, target_dev_id;
++ u32 len;
+ char lu_id_str[6];
+ int host_no = devip->sdbg_host->shost->host_no;
+
+@@ -1675,9 +1677,9 @@ static int resp_inquiry(struct scsi_cmnd
+ kfree(arr);
+ return check_condition_result;
+ }
+- len = min(get_unaligned_be16(arr + 2) + 4, alloc_len);
++ len = min_t(u32, get_unaligned_be16(arr + 2) + 4, alloc_len);
+ ret = fill_from_dev_buffer(scp, arr,
+- min(len, SDEBUG_MAX_INQ_ARR_SZ));
++ min_t(u32, len, SDEBUG_MAX_INQ_ARR_SZ));
+ kfree(arr);
+ return ret;
+ }
+@@ -1713,7 +1715,7 @@ static int resp_inquiry(struct scsi_cmnd
+ }
+ put_unaligned_be16(0x2100, arr + n); /* SPL-4 no version claimed */
+ ret = fill_from_dev_buffer(scp, arr,
+- min_t(int, alloc_len, SDEBUG_LONG_INQ_SZ));
++ min_t(u32, alloc_len, SDEBUG_LONG_INQ_SZ));
+ kfree(arr);
+ return ret;
+ }
+@@ -1728,8 +1730,8 @@ static int resp_requests(struct scsi_cmn
+ unsigned char *cmd = scp->cmnd;
+ unsigned char arr[SCSI_SENSE_BUFFERSIZE]; /* assume >= 18 bytes */
+ bool dsense = !!(cmd[1] & 1);
+- int alloc_len = cmd[4];
+- int len = 18;
++ u32 alloc_len = cmd[4];
++ u32 len = 18;
+ int stopped_state = atomic_read(&devip->stopped);
+
+ memset(arr, 0, sizeof(arr));
+@@ -1773,7 +1775,7 @@ static int resp_requests(struct scsi_cmn
+ arr[7] = 0xa;
+ }
+ }
+- return fill_from_dev_buffer(scp, arr, min_t(int, len, alloc_len));
++ return fill_from_dev_buffer(scp, arr, min_t(u32, len, alloc_len));
+ }
+
+ static int resp_start_stop(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+@@ -2311,7 +2313,8 @@ static int resp_mode_sense(struct scsi_c
+ {
+ int pcontrol, pcode, subpcode, bd_len;
+ unsigned char dev_spec;
+- int alloc_len, offset, len, target_dev_id;
++ u32 alloc_len, offset, len;
++ int target_dev_id;
+ int target = scp->device->id;
+ unsigned char *ap;
+ unsigned char arr[SDEBUG_MAX_MSENSE_SZ];
+@@ -2467,7 +2470,7 @@ static int resp_mode_sense(struct scsi_c
+ arr[0] = offset - 1;
+ else
+ put_unaligned_be16((offset - 2), arr + 0);
+- return fill_from_dev_buffer(scp, arr, min_t(int, alloc_len, offset));
++ return fill_from_dev_buffer(scp, arr, min_t(u32, alloc_len, offset));
+ }
+
+ #define SDEBUG_MAX_MSELECT_SZ 512
+@@ -2582,7 +2585,8 @@ static int resp_ie_l_pg(unsigned char *a
+ static int resp_log_sense(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
+ {
+- int ppc, sp, pcode, subpcode, alloc_len, len, n;
++ int ppc, sp, pcode, subpcode;
++ u32 alloc_len, len, n;
+ unsigned char arr[SDEBUG_MAX_LSENSE_SZ];
+ unsigned char *cmd = scp->cmnd;
+
+@@ -2652,9 +2656,9 @@ static int resp_log_sense(struct scsi_cm
+ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1);
+ return check_condition_result;
+ }
+- len = min_t(int, get_unaligned_be16(arr + 2) + 4, alloc_len);
++ len = min_t(u32, get_unaligned_be16(arr + 2) + 4, alloc_len);
+ return fill_from_dev_buffer(scp, arr,
+- min_t(int, len, SDEBUG_MAX_INQ_ARR_SZ));
++ min_t(u32, len, SDEBUG_MAX_INQ_ARR_SZ));
+ }
+
+ static inline bool sdebug_dev_is_zoned(struct sdebug_dev_info *devip)
+@@ -4409,7 +4413,7 @@ static int resp_report_zones(struct scsi
+ put_unaligned_be64(sdebug_capacity - 1, arr + 8);
+
+ rep_len = (unsigned long)desc - (unsigned long)arr;
+- ret = fill_from_dev_buffer(scp, arr, min_t(int, alloc_len, rep_len));
++ ret = fill_from_dev_buffer(scp, arr, min_t(u32, alloc_len, rep_len));
+
+ fini:
+ read_unlock(macc_lckp);
--- /dev/null
+From e0a2c28da11e2c2b963fc01d50acbf03045ac732 Mon Sep 17 00:00:00 2001
+From: George Kennedy <george.kennedy@oracle.com>
+Date: Thu, 18 Nov 2021 14:03:28 -0500
+Subject: scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
+
+From: George Kennedy <george.kennedy@oracle.com>
+
+commit e0a2c28da11e2c2b963fc01d50acbf03045ac732 upstream.
+
+In resp_mode_select() sanity check the block descriptor len to avoid UAF.
+
+BUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509
+Read of size 1 at addr ffff888026670f50 by task scsicmd/15032
+
+CPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15
+Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
+Call Trace:
+ <TASK>
+ dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107
+ print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257
+ kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443
+ __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
+ resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509
+ schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483
+ scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537
+ scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521
+ blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640
+ __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325
+ blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358
+ __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762
+ __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839
+ blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891
+ blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474
+ blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63
+ sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837
+ sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775
+ sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941
+ sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166
+ __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52
+ do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50
+ entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113
+
+Link: https://lore.kernel.org/r/1637262208-28850-1-git-send-email-george.kennedy@oracle.com
+Reported-by: syzkaller <syzkaller@googlegroups.com>
+Acked-by: Douglas Gilbert <dgilbert@interlog.com>
+Signed-off-by: George Kennedy <george.kennedy@oracle.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/scsi/scsi_debug.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/scsi/scsi_debug.c
++++ b/drivers/scsi/scsi_debug.c
+@@ -2501,11 +2501,11 @@ static int resp_mode_select(struct scsi_
+ __func__, param_len, res);
+ md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2);
+ bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6);
+- if (md_len > 2) {
++ off = bd_len + (mselect6 ? 4 : 8);
++ if (md_len > 2 || off >= res) {
+ mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1);
+ return check_condition_result;
+ }
+- off = bd_len + (mselect6 ? 4 : 8);
+ mpage = arr[off] & 0x3f;
+ ps = !!(arr[off] & 0x80);
+ if (ps) {
arm-dts-imx6ull-pinfunc-fix-csi_data07__esai_tx0-pad-name.patch
xsk-do-not-sleep-in-poll-when-need_wakeup-set.patch
media-mxl111sf-change-mutex_init-location.patch
+fuse-annotate-lock-in-fuse_reverse_inval_entry.patch
+ovl-fix-warning-in-ovl_create_real.patch
+scsi-scsi_debug-don-t-call-kcalloc-if-size-arg-is-zero.patch
+scsi-scsi_debug-fix-type-in-min_t-to-avoid-stack-oob.patch
+scsi-scsi_debug-sanity-check-block-descriptor-length-in-resp_mode_select.patch
+rcu-mark-accesses-to-rcu_state.n_force_qs.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
